WO2012075384A3 - Illumination assembly and method of forming same - Google Patents

Illumination assembly and method of forming same Download PDF

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Publication number
WO2012075384A3
WO2012075384A3 PCT/US2011/063047 US2011063047W WO2012075384A3 WO 2012075384 A3 WO2012075384 A3 WO 2012075384A3 US 2011063047 W US2011063047 W US 2011063047W WO 2012075384 A3 WO2012075384 A3 WO 2012075384A3
Authority
WO
Grant status
Application
Patent type
Prior art keywords
plurality
light
light sources
surface
light guide
Prior art date
Application number
PCT/US2011/063047
Other languages
French (fr)
Other versions
WO2012075384A2 (en )
Inventor
Gilles J. Benoit
David Scott Thompson
John A. Wheatley
Original Assignee
3M Innovative Properties Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0025Diffusing sheet or layer; Prismatic sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/00362-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068Arrangements of plural sources, e.g. multi-colour light sources
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073Light emitting diode [LED]

Abstract

An illumination assembly that includes a light guide and a plurality of light sources operable to direct light into the light guide is disclosed. The light sources have a center-to-center spacing of at least 15 mm, and a distance between a primary emitting surface of at least one light source of the plurality of light sources and the input surface is no greater than 1 mm. The assembly further includes a structured surface layer positioned between the plurality of light sources and the input surface. The structured surface layer includes a substrate and a plurality of structures on a first surface of the substrate facing the plurality of light sources. The assembly further includes a plurality of extraction features operable to direct light from the light guide through an output surface of the light guide.
PCT/US2011/063047 2010-12-04 2011-12-02 Illumination assembly and method of forming same WO2012075384A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US41983310 true 2010-12-04 2010-12-04
US61/419,833 2010-12-04

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2013542203A JP6073798B2 (en) 2010-12-04 2011-12-02 Lighting assembly and method of forming
EP20110799220 EP2646861A2 (en) 2010-12-04 2011-12-02 Illumination assembly and method of forming same
KR20137017117A KR20130137656A (en) 2010-12-04 2011-12-02 Illumination assembly and method of forming same
US13991554 US20130258709A1 (en) 2010-12-04 2011-12-02 Illumination assembly and method of forming same
CN 201180058442 CN103238092A (en) 2010-12-04 2011-12-02 Illumination assembly and method of forming same

Publications (2)

Publication Number Publication Date
WO2012075384A2 true WO2012075384A2 (en) 2012-06-07
WO2012075384A3 true true WO2012075384A3 (en) 2012-09-27

Family

ID=45373839

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/063047 WO2012075384A3 (en) 2010-12-04 2011-12-02 Illumination assembly and method of forming same

Country Status (6)

Country Link
US (1) US20130258709A1 (en)
EP (1) EP2646861A2 (en)
JP (1) JP6073798B2 (en)
KR (1) KR20130137656A (en)
CN (2) CN104808270B (en)
WO (1) WO2012075384A3 (en)

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Also Published As

Publication number Publication date Type
CN103238092A (en) 2013-08-07 application
US20130258709A1 (en) 2013-10-03 application
JP6073798B2 (en) 2017-02-01 grant
KR20130137656A (en) 2013-12-17 application
CN104808270B (en) 2017-08-15 grant
JP2013545248A (en) 2013-12-19 application
EP2646861A2 (en) 2013-10-09 application
CN104808270A (en) 2015-07-29 application
WO2012075384A2 (en) 2012-06-07 application

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